Zonal Geraniums, Pelargonium x hortorum, by definition, are not grown from seed. They are largely produced from cuttings, although some are done with tissue culture. The bedding plants sold in nurseries have historically been zonals, grown from cuttings, although there have been great strides in developing seed Geraniums (Pelargoniums) which yield larger plants with sturdier petals than traditional seed-grown samples.

Seed-grown Pelargoniums don't require WS, but generally won't be bothered by it either. They'll just sit there until the medium warms to ~75ðF, before they germinate.